Vertical ultrasonography image of normal testis N and extra testis E. But first, the big reveal. It's a rare condition that currently affects fewer than people, according to the American Urological Association. It takes a lot of balls to do what this guy did. Case Report In this case report we want to present radiological features and assessment of a patient with four testicles. Three, to be exact. You may feel a soft tube at the back of each testicle, which is called the epididymis.